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Summary: If a configurable class inherits torch.nn.Module and is instantiated, automatically call `torch.nn.Module.__init__` on it before doing anything else.

Reviewed By: shapovalov

Differential Revision: D42760349

fbshipit-source-id: 409894911a4252b7987e1fd218ee9ecefbec8e62

Summary:
Rasterize MC was not adapted to heterogeneous bundles.

There are some caveats though:
1) on CO3D, we get up to 18 points per image, which is too few for a reasonable visualisation (see below);
2) rasterising for a batch of 100 is slow.

I also moved the unpacking code close to the bundle to be able to reuse it.

{F789678778}

Reviewed By: bottler, davnov134

Differential Revision: D41008600

fbshipit-source-id: 9f10f1f9f9a174cf8c534b9b9859587d69832b71

Summary: More helpful errors when the output channels aren't 1 for density and 3 for color

Reviewed By: shapovalov

Differential Revision: D40341088

fbshipit-source-id: 6074bf7fefe11c8e60fee4db2760b776419bcfee

Summary:
Changed ray_sampler and metrics to be able to use mixed frame raysampling.

Ray_sampler now has a new member which it passes to the pytorch3d raysampler.
If the raybundle is heterogeneous metrics now samples images by padding xys first. This reduces memory consumption.

Reviewed By: bottler, kjchalup

Differential Revision: D39542221

fbshipit-source-id: a6fec23838d3049ae5c2fd2e1f641c46c7c927e3

Summary: Fixing comments on D37592429 (https://github.com/facebookresearch/pytorch3d/commit/0dce883241ae638b9fa824f34fca9590d5f0782c)

Reviewed By: shapovalov

Differential Revision: D37752367

fbshipit-source-id: 40aa7ee4dc0c5b8b7a84a09d13a3933a9e3afedd

Summary:
Make ViewMetrics easy to replace by putting them into an OmegaConf dataclass.

Also, re-word a few variable names and fix minor TODOs.

Reviewed By: bottler

Differential Revision: D37327157

fbshipit-source-id: 78d8e39bbb3548b952f10abbe05688409fb987cc

Summary: GenericModel crashes in case the `aux` field of any Renderer is populated. This is because the `rendered.aux` is unpacked to  ViewMetrics.forward whose signature does not contain **kwargs. Hence, the contents of `aux` are unknown to forward's signature resulting in a crash.

Reviewed By: bottler

Differential Revision: D36166118

fbshipit-source-id: 906a067ea02a3648a69667422466451bc219ebf6

Summary: Use logging instead of printing in the internals of implicitron.

Reviewed By: davnov134

Differential Revision: D35247581

fbshipit-source-id: be5ddad5efe1409adbae0575d35ade6112b3be63

Co-authored-by: Jeremy Francis Reizenstein <bottler@users.noreply.github.com>